Brake.



PATENTED JULY 21, 1908"l F. C. MILLER.

BRAKE.

APPLICATION FILED Inma 1907.

2 SHEETSSHE`ET 1.

PATENT@ JULY 21, 1908.' P. C. MILLER. BRAKE.

APPLICATION FILED JAN. 28. i907.

2 SHEETS-SHEET 2.

warum y wdr/M w 3 wuentoz akmwu's Fltlillllltll G. MILLER, Ol" (11h BRAKE.

Specification of Letten Patent.

Application filed January 28, 1907. Serial No. 354,545.

To alt whom it may concern:

Be it known that l, FREDERICK C. MILLER, a citizen oi the United States, and resident of Cincinnati, county of l-lai'nilton, Vand State of Ohio, have invented certain new and useful Improvements in Brakes, of which the following is a specification.

This invention relates to vehicle brakes and more particularly to that type iii which. a band is expanded tobe thrown into frictional engagement with an annular braking face carried by a rotated part.

An object of this invention is to provide. a construction by' which great power may be secured to apply the brake.

Another object is to' provide a construction by which the parts may be taken apart so as to be cleaned .or to bc repaired Other and further objects will appear in the following description and will be more particularly pointed out in the appended claims.

In the drawings: Figure 1 is an elevation of an axle of an automobile and a hub with my invention applied thereto; Fig. 2 is an axial section 'of lthe embodiment as shown in Fig. 1; Fig. 2 is a transverse section of the saine embodiment; F igA 4 is a detail view showing the plates connecting the ends of the sectors; Fig. 5 is a detail. sectional view of the means for holding. the braking ring against undue movement; Fig. 6 is an axial section oll another embodiment oli my invention; Fig. 7 is a transwrse section ol this latter embodiment; and. Fig. S is a detail .view

voi' the plate connecting the lrec ends of the sectors.

While I herein show and describe i'ny invention as applied to an automobile rear axle of the floating type, l desire it to be undei-stood that thc sameis applicable to other types of automobile axles and with slight changes to various sorts of mechanisms.

Referring more particularly to the einbodiincnt as shown in Figs. l to 5, '1; indi- Cates the hollow axle or stationary part containing a Hoating, driving shaft 1a and 2 the hub yor rotating part. The rotating part 2 carries a housing 3 which is provided with two internal concentric annular braking faces 4 and 5. The axle 1 carries a disk 6 troni one face of which extends a pair ol' integral bosses 7 and 8. shafts 9 and 10 res `iectively, which have extending laterally irom one of their ends, armsy 11 and 12 respectively. From that face of the disk (i opposite that which carries bosses 7 and S extend. sectors 13 and 't4 which are scoured to the shafts 9 and 1() respectively so as to turn with said shafts. These sectors 13 and 14 mesh respectively with the sectors 15 and 16 which are journalcd on studs 17 and 18 extending from the disk 6. lt will be noted that these sectors are arranged in pairs and the inembers of each pair have extending in opposite directions from their peripheries, lugs 19 and 2U, which are provlded with grooves 2i and 22, to receive the ends of one ot' the split rings 23 and'24. These split rings 23 and .24 are adapted to fit within the annular braking faces 4 and '5 respectivel f and when the shafts 9 and 1() are rotate by the arr'ns 11 ln these bosses are 4iouirnaled the Patented July 21, 19078. W

and 12, said rings are expanded so as to beV throvvn'into .iirin engagement with the annular braking faces, this being caused bythe lugs 19 and 20 which separate the ends'of the split rings when the shafts 9 and 10 are rotated in one direction. The split rings may be constructed in any suitable manner but it is preferred to cover their frictional face with leather lor like material.

'lo prevent the split rings moving unduly when they are not being employed-to brake the rotating part, I provide thc following means: Each vsplit ring carries, at a point approximately diamctrieally opposite the split in the ring, an inwardly extending pin or i'nojcction 25 or 26, which pins or pror jections work in slots 25 and 2G respec-Y and 32 located on the sides of the sectors, i

13 and 1.4, opposite the sides on which the studs 17 and 18 are positioned, the ends of the sectors 1.3 and 14 being Ajonrnalcd in the plates. These plates are provided with tipico ward extensions and 34 which cover thel splits in the 23 and 2.4 and serve as a l described embodiment. means for preventing the ends of the rings remove the ends of the split rings from ther extensions and 34, it is necessary first to remove the `rotating member and then to rotate the sectors in a direction to expand the ring. This carries the ends of the rings beyond the-ends of the dxtensions 33 and 34 and it is then only necessary to move the rin axially awa4 from the disk. In the emdiment of the invention as shown in Figs. 6to 8, 1 indicates the axle and 2 the hub car ing the hous` 3. In this embodiment, t 1e annular br 'ng surfaces 4 and 5 are in alinement or in other words, side by side. The disk 6 is provided with but one inte al hollow boss 35 in which is journaled a ho ow shaft 36 which in turn has journaled therein a shaft 37. These shafts have extending therefrom, arms 38 and grespectively, the

solid or inner shaft 37 being extended beyond l to the stud 42 and to the outer end of the sha t 36 for the pur pose of permitting the arm 38 to be secured thereto. shaft 36 carries a sector 0 which meshes with a sector 41 journaled on a stud42 extending from that face of the disk opposite the face from which the hollow boss 35 extends. The inner end of the shaft 37 is extended beyond the inner end of the hollow shaft 36 and carries a sector 43 which meshes with a sector 44 also journaled on the stud 42. It will be noted that these sectors are arranged in pairs, the axes of the pairs being aline The members of each pair have'lugs 19 and 20 as in the other embodiment and the outer faces of these lugs are rovided with grooves'21 and 22 respective to r6- ceive the ends of split rings 23 and 4.

In the embodiment shown in Figs. 6 to 8, as inthe other embodiment, I provide means for preventi the split rin moving too far away from t eir annular raking surfaces.

his means comprises a stud 43l extend' over both rings 23* and 24, and providn throughout the greater ortion of its length with a slot 44". s ot is adapted to receive both lugs or pins 45 extending from the two rings 23 and 24. This means, as in the other embodiment, ermits the split' rings to be removed from t e diskby withdrawing them in an axial direction.

The free ends of the sectors are spaced apart by a plate 46, which is rigidly secured a sufpporting stud 47 'extending from the face o the disk 6?'but his plate also carries an extension 48 which covers the ends of the split ring and which serves the same function as the extensions 33 and 34 on the plates 29 and 30 of the first The inner end 'of the hollow' Arranged between the split rings-23, 24 is a late 46 which is thinner than the plate 46 ut has the same forni and functions and in addition acts to kee the rings 23, 24" separated.

'libe arms on the sector-operatcd shaft in both embodiments are connected to any suitable operating mechanism. lt will be noted that the pressure on the brakin surfaces may be controlled to a nicety. S ould only a slight braking action be desired, either one of the split rinffs may be thrown into action. If a strong raking action is desired, both of the split rings may be thrown into action. u

Having thus described m invention, what I claim as new therein and i esire to secure by Letters Patent is:-

1. The-combination of the stationary and rotary members, one of which is provided with an internal annular braking surface and the other of which carries a pair of intermeshing sectors constructed with eccentricallylocated and oppositely resented rooves, a split ring surrounded by t e internal surface and having its extreme ends engage with and confined by the grooves in the sectors, and means for operating the sectors.

2. The combination with the stationary member, of a rotary member carrying an internal annular braking surface, a split braking ring surrounded by the annular braking surface, means for engaging the ends of the ring to expand said ring against said braking ur ace, a pin extend' inwardly from sai ring, and a slotted sind extending laterally from the stationary member and having the pin on the ring working in the slot.

3. The combination with a stationary axle and a driving shaft, of a hub rotated by the driving shaft and carrying a housing having airinternal braking surface, a split brak ing ring, a pair extending from the stationary member and cngagin the split ring to operate the same, and a p ate connecting the free ends of the sectors.

4. The combination with an axle and a driving shaft, of a hub rotated shaft and carrying a housin having an interna] brakingsurfsce, a s lit brakin ring surrounded by the internal raking su ace, a

air of sectors journaled on and extending rom the stationary member and eng ng the split ring to operate the same, and a p ate connectin the sectors and having an extension whiel holds the free ends of the ring to the sectors. provides a journal bearing for the sector 43. s

5. The combination with a stationary member, of a rotary member, a pair of braking rings arrangedside byside, means carried by the rotary member to be engaged by the split rings to produce a braking ac rakin of sectors journaled on andl by the driving The foregoing Speccation signed 'lv-W- port Ky, t is 5th day of December, Se:

FREDERICK C. MILLER.

' In the presence of two Witnesses-- HENRY C. PETERS, LAwRENoE J.l DIsKxN. 

